<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>

<div id="app">
    <cpn></cpn>
</div>

<template id="cpn">
    <div>
        <h2>我是cpn组件</h2>
        <ccpn></ccpn>
    </div>
</template>


<template id="ccpn">
    <div>
        <h2>我是子组件</h2>
        <button @click="btnClick">按钮</button>
    </div>
</template>

<script src="../vue.js"></script>
<script>
    const app = new new Vue({
        el:'#app',
        data:{
            message: '你好啊'
        },
        components:{
            cpn:{
                template:'#cpn',
                components: {
                    ccpn:{
                        template:'#ccpn',
                        methods: {
                    btnClick(){
                        //1.访问父组件
                        console.log(this.$parent);
                }
                        }
                    }
                }
            }
        }
    })
</script>
</body>
</html>